CsMn(Br_xI_{1-x})_3: Crossover from an XY to an Ising Chiral Antiferromagnet

Germany) T. Ono; H. Tanaka (Department of Physics; H. v. Loehneysen (Physikalisches Institut; Japan); J. Wosnitza; R. Buegel; Tokyo Institute of Technology; Universitat Karlsruhe

arxiv: cond-mat/0103011 · v1 · submitted 2001-03-01 · ❄️ cond-mat.str-el · cond-mat.mtrl-sci

CsMn(Br_xI_(1-x))₃: Crossover from an XY to an Ising Chiral Antiferromagnet

R. Buegel , J. Wosnitza , H. v. Loehneysen (Physikalisches Institut , Universitat Karlsruhe , Germany) T. Ono , H. Tanaka (Department of Physics , Tokyo Institute of Technology , Japan) This is my paper

classification ❄️ cond-mat.str-el cond-mat.mtrl-sci

keywords systemchiralcrossovercsmnmagneticspecific-heatagreesalmost

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We report on high-resolution specific-heat and magnetocaloric-effect measurements of the triangular-lattice antiferromagnets CsMn(Br_xI_{1-x})_3 with different x. The evolution of the magnetic phase diagrams from the easy-axis system for x = 0 to the easy-plane system for x = 1 was studied in detail. The specific-heat critical exponent alpha of the almost isotropic x = 0.19 system agrees with the value predicted for a chiral Heisenberg scenario. In an applied magnetic field (B = 6 T) a crossover to a weak first-order transition is detected.

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CsMn(Br_xI_(1-x))₃: Crossover from an XY to an Ising Chiral Antiferromagnet

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